Reverts third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_generator.h

 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
 // https://developers.google.com/protocol-buffers/
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
@@ skipping 23 matching lines @@
 #define GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_GENERATOR_H__
 
 #include <string>
 #include <google/protobuf/compiler/code_generator.h>
 
 namespace google {
 namespace protobuf {
 namespace compiler {
 namespace objectivec {
 
-// CodeGenerator implementation which generates a ObjectiveC source file and
-// header.  If you create your own protocol compiler binary and you want it to
-// support ObjectiveC output, you can do so by registering an instance of this
-// CodeGenerator with the CommandLineInterface in your main() function.
 class LIBPROTOC_EXPORT ObjectiveCGenerator : public CodeGenerator {
  public:
   ObjectiveCGenerator();
   ~ObjectiveCGenerator();
 
   // implements CodeGenerator ----------------------------------------
-  bool HasGenerateAll() const;
-  bool Generate(const FileDescriptor* file,
-                const string& parameter,
-                GeneratorContext* context,
-                string* error) const;
-  bool GenerateAll(const vector<const FileDescriptor*>& files,
-                   const string& parameter,
-                   GeneratorContext* context,
-                   string* error) const;
+  bool Generate(const FileDescriptor* file, const string& parameter,
+                OutputDirectory* output_directory, string* error) const;
 
  private:
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ObjectiveCGenerator);
 };
 
 }  // namespace objectivec
 }  // namespace compiler
 }  // namespace protobuf
 }  // namespace google
 #endif  // GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_GENERATOR_H__